CEMARAN PESTISIDA FOSFAT-ORGANIK DI AIR DANAU BUYAN BULELENG BALI

Abstract

Pesticide is a chemical used to destroy or to control any pest that damages plant, animal, etc. Therefore,
pesticide is very important for protecting plant, animal, and in controlling vector-borne diseases. The use of pesticide
is therefore inevitable. A study to investigate the organophosphate pesticide residue in water of Lake Buyan was
carried out.
This is an expost facto study with Analytical Cross Sectional Study design. Sample preparation for this
purposed was carried out following a standard method. Gas chromatography was employed in order to gain the
organophosphate pesticide contaminant.
Organophosphate pesticide contaminant, i.e. dimethoate, chlorphyrifos and prophenofos were observed on
55 water sampling point taken from 5 zone. The residual contaminant of dimethoate; chlorphyriphose; and
prophenophose, were 9.3, 3.5, and 2.1 ppb respectively. Total residual contaminant was 14.9 ppb which was bellow
threshold concentration of 100 ppb (SK Gubernur Bali No. 515 Tahun 2000).